CCC 749
© Libreria Editrice Vaticana Source: vatican.va
The article concerning the Church also depends entirely on the article about the Holy Spirit, which immediately precedes it. "Indeed, having shown that the Spirit is the source and giver of all holiness, we now confess that it is he who has endowed the Church with holiness." Roman Catechism I, 10, 1. The Church is, in a phrase used by the Fathers, the place "where the Spirit flourishes." St. Hippolytus, Trad. Ap. 35: SCh — Sources Chrétiennes (patristic critical-edition series).
Read the full chapter 3. I Believe in the Holy Spirit ¶683–1065